Have you heard of HTML5 microdata? A great read by Alexis Goldstein

It’s hard to imagine Google, Microsoft and Yahoo! collaborating on anything, much less something search-related, but that’s exactly what they’re doing on the site schema.org . Schema.org provides a set of vocabularies we can make use of with Microdata. By using the vocabularies for things like Person, Book and Organization that are on defined schema.org, we can be sure our Microdata will be understood by Google, Bing and Yahoo! searches